Views on taxation varied greatly according to political allegiance. While 44 percent of Democrats said their tax bill was too high, 77 percent of Republicans complained about the amount they had to pay to Uncle Sam.

Young people are more likely than seniors to gripe about their tax burden. In 2015, only 38 percent of those under 30 complained about their taxes. But this year the figure shot up to 55 percent. In comparison, only 39 percent of those aged 65 and over were unhappy about their taxes, down from 46 percent last year.

Meanwhile, the gender gap has disappeared. Last year, 47 percent of women said they paid too much, compared to 56 percent of men. Now the dissatisfaction among women has shot up to 58 percent, while men have stayed steady at 55 percent.